Powertrain Control Module: Installation

2004 Oldsmobile Bravada AWDSECTION Installation
WARNING: This page is about a different car, the 2003 Pontiac Sunfire and 2003 Chevrolet Cavalier. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the new PCM from the packaging and check the service number to verify the number is the same number, or an updated number, as the faulty PCM.
  2. Push the PCM into the PCM bracket. The retaining tab will lock in place.
  3. Install the PCM harness connectors and lock down the release levers.
  4. Connect the negative battery cable. Tighten to specification. See TORQUE SPECIFICATIONS .
  5. Program the PCM. See PROGRAMMING 
RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.